67602017-09-16Colloid Thruster for Attitude Control Systems (ACS) and Tip-off Control Applications, Phase ICompletedFeb 2008Aug 2008We propose to develop and test key technologies needed for an integrated, high thrust colloid thruster system with no moving parts, for spacecraft attitude control and tip-off rotation cancellation. Busek has already successfully demonstrated the use of porous substrates as planar emitters for colloid thrusters. In this proposal we will pursue enabling technologies for such a thruster, such as a passive feedsystem and an isolation membrane for separating the propellant in the reservoir from the thruster head prior to launch. Advancements to date suggest viable approaches for the development of a cost-effective, reliable, and flexible thruster configuration. SBIR/STTRSpace Technology Mission DirectorateJet Propulsion LaboratoryJPLNASA CenterPasadenaCABusek Company, Inc.IndustryNatickMACaliforniaMassachusettsTherese GriebelCarlos TorrezNathaniel Demmons